Get the first integers in a string with JavaScript

Question

I have a string in a loop and for every loop, it is filled with texts the looks like this:

\"123 hello everybody 4\"
\"4567 stuff is fun 67\"
\"12368 more st         


        

Answer 1

Use Regular Expressions:

var re = new RegExp(/^\d+/); //starts with digit, one or more
var m = re.exec("4567 stuff is fun 67");
alert(m[0]); //4567

m = re.exec("stuff is fun 67");
alert(m); // null